Question

Why change in temperature of water from 14.5° C to 15.5° C is specified in defining one calorie?

Answer 1

Answer:

From the different kinds of experiments performed by various scientists and organization, we get that for various kinds of substances there are different quantity of heat required for raising the temperature of that substance by one degree Celsius.

Thus, for the water the case is also same, the amount of heat energy absorption and distribution of the various substances depend on the temperature also.So, for the case of water the interval was specified as (14.5-15.5)° C.